SIMBAD references

2022ApJS..262...21F - Astrophys. J., Suppl. Ser., 262, 21 (2022/September-0)

3D Selection of 167 Substellar Companions to Nearby Stars.

FENG F., BUTLER R.P., VOGT S.S., CLEMENT M.S., TINNEY C.G., CUI K., AIZAWA M., JONES H.R.A., BAILEY J., BURT J., CARTER B.D., CRANE J.D., FLAMMINI DOTTI F., HOLDEN B., MA B., OGIHARA M., OPPENHEIMER R., O'TOOLE S.J., SHECTMAN S.A., WITTENMYER R.A., WANG S.X., WRIGHT D.J. and XUAN Y.

Abstract (from CDS):

We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous work. We find 914 radial velocity signals with periods longer than 1000 days. Around these signals, 167 cold giants and 68 other types of companions are identified, through combined analyses of radial velocity, astrometry, and imaging data. Without correcting for detection bias, we estimate the minimum occurrence rate of the wide-orbit brown dwarfs to be 1.3%, and find a significant brown-dwarf valley around 40 MJup. We also find a power-law distribution in the host binary fraction beyond 3 au, similar to that found for single stars, indicating no preference of multiplicity for brown dwarfs. Our work also reveals nine substellar systems (GJ 234 B, GJ 494 B, HD 13724 b, HD 182488 b, HD 39060 b and c, HD 4113 C, HD 42581 d, HD 7449 B, and HD 984 b) that have previously been directly imaged, and many others that are observable at existing facilities. Depending on their ages, we estimate that an additional 10-57 substellar objects within our sample can be detected with current imaging facilities, extending the imaged cold (or old) giants by an order of magnitude.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Astrometric exoplanet detection - Radial velocity - Exoplanet detection methods - Exoplanet astronomy - Brown dwarfs - Exoplanet catalogs

VizieR on-line data: <Available at CDS (J/ApJS/262/21): table3.dat refs.dat>

Simbad objects: 381

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